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https://issues.apache.org/jira/browse/HAMA-515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13259789#comment-13259789
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Thomas Jungblut commented on HAMA-515:
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Can someone assist me here? It is a totally brainfuck task.
We should have done this correctly right at the start when we introduced
them... And I'm currently in a stage of writing it again from scratch just
maintaining the API.
However I feel it is very ugly to serialize and deserialize all the counter in
every superstep and put it into ZK.
> Counter should be synchronized by sync()
> ----------------------------------------
>
> Key: HAMA-515
> URL: https://issues.apache.org/jira/browse/HAMA-515
> Project: Hama
> Issue Type: New Feature
> Affects Versions: 0.5.0
> Reporter: Thomas Jungblut
> Assignee: Thomas Jungblut
> Priority: Minor
> Fix For: 0.6.0
>
> Attachments: HAMA-515.patch
>
>
> We should synchronize the counters in all tasks after a sync() call.
> Then someone can use it for flow control. E.G. graph related algorithms, to
> get the number of globally updated vertices.
> Two options to solve this:
> - Sync the whole stuff over RPC from the BSPMaster
> - Use Zookeeper for counter handling
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